Almost everything we know about Germanic gods was written down by outsiders
Odin, Thor, Tyr and Frigg belonged to a religion practised for a thousand years across Scandinavia, Britain and Germany, yet its followers left almost no writing about it. Our picture comes mostly from Roman observers with an agenda and Christian monks recording what they had replaced.
Germanic paganism was never a single codified faith. It shifted from region to region over roughly a millennium of written record, from the first Roman reports to the final conversions, which is why the scholar Rudolf Simek prefers to speak of Germanic religions in the plural. Some core ideas can still be reconstructed: origin myths, an end-of-the-world myth, belief in fate and an afterlife, and the notion that humans live in a middle-earth. The early medieval pantheon included Wodanaz, Thunraz, Tiwaz and Frijjo, better known as Odin, Thor, Tyr and Frigg, alongside giants, dwarfs, elves and dragons.
The sources are the central problem. The chief text for the Roman era is Tacitus's Germania, but it is unclear how much he knew, he recycled stock descriptions of barbarians going back to Herodotus, and he partly wrote to shame Romans with virtues he thought they had lost. Later accounts come from Christians such as Gregory of Tours and Bede. Scandinavian material is richer, including the Prose Edda attributed to Snorri Sturluson in the thirteenth century, so scholars are tempted, unwisely, to fill continental gaps with Norse evidence. Most gods named in Roman times have no known Norse counterpart.
Archaeology offers more direct testimony: burials with rich grave goods, ships or wagons, carved wooden figures pulled from bogs, and deposits of objects and animals in springs and marshes. Gold foil figures, bracteates and picture stones are genuine pre-Christian images, though often hard to decode.
Neighbours left marks too. Contact with Celts in the first millennium BCE shows in shared vocabulary: Thor's name matches the Celtic Taranis, and the Germanic words for runes and sacred groves have Celtic roots. Romans equated local gods with their own. Jacob Grimm believed later folklore preserved ancient belief almost unchanged, an idea absorbed by volkisch nationalism and abandoned after World War II, before a cautious revival in Nordic scholarship from the 1990s.
Source: Germanic paganism
